Yield or tensile? If the writer meant tensile, then the yield will be well below that. Might have a use attaching decorations, but structural? No thanks.
I guess I should have said tensile, although for more brittle materials, there seems to be is little or no separation between them.
This is applied research in the lab, but I am not sure what problem this process is supposed to solve.
GM is already spot welding steel to alum.